CN104981965A - Wireless charger for a mobile terminal - Google Patents
Wireless charger for a mobile terminal Download PDFInfo
- Publication number
- CN104981965A CN104981965A CN201480007390.3A CN201480007390A CN104981965A CN 104981965 A CN104981965 A CN 104981965A CN 201480007390 A CN201480007390 A CN 201480007390A CN 104981965 A CN104981965 A CN 104981965A
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- China
- Prior art keywords
- mobile terminal
- wireless charger
- power transmission
- driver element
- transmission coil
- Prior art date
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- 230000005540 biological transmission Effects 0.000 claims description 49
- 238000004891 communication Methods 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 238000013459 approach Methods 0.000 claims description 3
- 230000005674 electromagnetic induction Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
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- 230000003116 impacting effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
- H04B5/43—Antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Disclosed is a wireless charger for a mobile terminal, by which charging efficiency can be raised irrespective of a location of a mobile terminal mounted on the wireless charger. The present invention includes a housing, a power transmitting coil provided within the housing in a manner of being spirally wound plural times, a power supply module configured to externally supply a power to the power transmitting coil, a driving unit connected to a spiral center of the power transmitting coil, a sensing unit configured to sense a location of the mobile terminal mounted on a topside of the housing, and a control unit controlling the driving unit to shift the spiral center of the power transmitting coil to the location of the mobile terminal sensed by the sensing unit.
Description
Technical field
The present invention relates to a kind of wireless charger, and more specifically, relate to a kind of wireless charger for mobile terminal.Although what the present invention was suitable for has wide range of applications, it is particularly useful for providing the mobile terminal with more high recharge efficiency.
Background technology
Generally speaking, terminal can be classified as mobile terminal and fixed terminal.In addition, mobile terminal can be classified as handheld terminal and car-mounted terminal further.
In addition, mobile terminal can perform various function, such as, and data and voice communication, by camera photographic images and video, recording audio, playing music export music by speaker system and show image and video over the display.
But along with the expansion of the function of terminal, the battery due to mobile terminal trends towards quick consumption, therefore must frequently charge to battery.When having incoming call or be connected with the mobile terminal in use when charging wire in charging process, this mobile terminal is not easy to user and uses.In order to not use mobile terminal when inconvenient like this, charging wire and mobile terminal being separated, then again charging wire being connected with this mobile terminal after use mobile terminal.Therefore, use mobile terminal still inconvenient.
Summary of the invention
Technical problem
Therefore, the present invention is directed to a kind of wireless charger for mobile terminal, it can solve substantially due to the limitation of prior art and defect and one or more problem caused.
An object of the present invention is to provide a kind of wireless charger for mobile terminal, utilize this wireless charger not use charging wire and to charge to mobile terminal.
Another object of the present invention is to provide a kind of wireless charger for mobile terminal, utilizes this wireless charger to improve charge efficiency.
The technical problem that can obtain from the present invention is not by the restriction of above-mentioned effect.Further, from following description, general technical staff of the technical field of the invention can be expressly understood other NM technical problems.
The solution of problem
To state supplementary features of the present invention and advantage in the following description, and according to this description, these supplementary features and advantage will partly become apparent, or these supplementary features and advantage can obtain by putting into practice the present invention.Structure by specifically noting in printed instructions and claim and accompanying drawing realizes and obtains by object of the present invention and other advantages.
In order to realize these and other advantages, and consistent with object of the present invention, and what describe as embodied and widely is such, and a kind of wireless charger for mobile terminal according to the present invention comprises: housing; Power transmission coil, the mode that this power transmission coil spirally repeatedly reels is arranged in this housing; Power module, this power module is configured to provide electric power externally to this power transmission coil; Driver element, this driver element is connected with the spiral center of this power transmission coil; Sensing cell, this sensing cell is configured to sense the position of the mobile terminal be arranged on the top side of this housing; And control unit, this control unit controls the position that the spiral center of this power transmission coil is transferred to the mobile terminal that this sensing cell senses by this driver element.
Preferably, this driver element can flatly move at least one direction.
Preferably, this driver element can rotate the winding times changing power transmission coil.
Preferably, this wireless charger may further include short-range communication module, this short-range communication module be configured to wirelessly with the communication of mobile terminal be arranged on housing.This control unit can receive the information of the charged state about mobile terminal.If the charge efficiency of mobile terminal becomes be equal to or less than reference value, then this control unit can control driver element and is transferred.
Preferably, this power transmission coil may further include at least one in switch and variable capacitor, and, this control unit can adjust resistance value by least one in control switch and variable capacitor according to the change of the inductance value of this power transmission coil, so that power transmission coil runs under driving frequency when shifting driver element.
Preferably, this sensing cell can comprise multiple proximity transducers of the top side being arranged on housing, and this control unit can control driver element and be transferred to this proximity transducer place, the Close approach of this proximity transducer object sensing.
Preferably, this sensing cell can comprise the pressure sensor of the top side being arranged on housing, and this control unit can control the value changing section that driver element is transferred to this pressure sensor.
Preferably, this sensing cell can comprise multiple sensing coils of the top side being arranged on housing, and this control unit can control the part that driver element is transferred to the sensing coil place in multiple sensing coil with different power consumption.
More preferably, the frequency of operation of this sensing coil can be less than the frequency of operation of this power transmission coil.
Should be understood that, aforementioned whole description and the following detailed description are exemplary with illustrative, and are intended to provide the further explanation to the present invention for required protection.
The advantageous effect of invention
Therefore, the invention provides following effect and/or feature.
First, according at least one execution mode of the present invention, charge efficiency can not be improved by the impact of the position of the mobile terminal be arranged on wireless charger.
From the present invention, obtainable effect is not limited to above-mentioned effect.Further, those skilled in the art can understand other NM effects by following with being described clearly.
Accompanying drawing explanation
This accompanying drawing is included to provide a further understanding of the present invention, and is merged in this specification, forms the part of this specification, and this accompanying drawing exemplified with embodiments of the present invention, and makes an explanation to principle of the present invention together with specification.In this accompanying drawing:
Fig. 1 is the block diagram of a kind of wireless charger for mobile terminal according to one embodiment of the present invention;
Fig. 2 is the perspective view of a kind of wireless charger for mobile terminal according to one embodiment of the present invention;
Fig. 3 is the diagram of the power transmission coil of a kind of wireless charger inside for mobile terminal according to one embodiment of the present invention; And
Fig. 4 is the diagram of the sensing cell of a kind of wireless charger for mobile terminal according to one embodiment of the present invention.
Embodiment
Now with detailed reference to the preferred embodiment of the present invention, its example is illustrated in the accompanying drawings.Whenever possible, will identical Reference numeral be used to represent identical or similar part in accompanying drawing always.As used herein, suffix " module ", " unit " and " part " are used to element and are only used to be convenient to openly.Therefore, suffix itself is not given significance or effect, and should be understood that, " module ", " unit " and " part " can use together or use convertibly.In addition, when being described execution mode disclosed in this specification, if think that the detailed description of correlation technique can make the purport of execution mode disclosed in this specification indefinite, then corresponding details should be omitted.Comprise accompanying drawing to be only used to be convenient to understand execution mode disclosed in this specification further.By accompanying drawing, technical concept right and wrong disclosed in this specification are circumscribed.Further, accompanying drawing is appreciated that and comprises all amendments without departing from the spirit and scope of the present invention, equivalent and alternative.
Fig. 1 is the block diagram according to the wireless charger 200 in a kind of mobile terminal of one embodiment of the present invention.
With reference to figure 1, electric power transfer unit 220, driver element 230, sensing cell 240, control unit 250 and power subsystem 210 can be comprised according to the wireless charger 200 in a kind of mobile terminal of the present invention.
This electric power transfer unit 220 is the equipment being configured to wirelessly transmit to mobile terminal 100 electric power, and can use the power transmission coil 220 repeatedly reeled.If electric current to be put on this coil, then electric current flows being arranged in the charge coil on mobile terminal 100.Thus, wirelessly can transmit electric power.
Wireless charging technology can be classified as electromagnetic induction and magnetic resonance.Particularly, electromagnetic induction utilizes non-radiative characteristic and non-resonant technology.According to electromagnetic induction, if magnetic field is produced by the coil of electric power transfer unit, then electric power is introduced on the coil of receiving element by electromagnetic induction principle.Electromagnetic induction is used to motor, transformer etc.Recently, electromagnetic induction is used to the RFID and electric toothbrush charger etc. of transportation card.
Due to the transmission range relative very short (such as, several millimeters) of electromagnetic induction, if charging distance increases, although then electromagnetic induction has high-transmission efficiency, the efficiency of electromagnetic induction also can reduce fast.Therefore, shortcoming is that mobile terminal 100 should be placed on accurate position.In addition, because electromagnetic induction uses low frequency (such as, 100-250kHz), which limit power transmission capacity.
Magnetic resonance is the technology utilizing non-radiative characteristic and resonance.Below the principle of magnetic resonance is made an explanation.First, if electric current is put on power transmission coil 220, then the magnetic field with resonant frequency vibration is generated.If like this, then the Wireless charging coil of mobile terminal 100 flows to make electric current wherein with this resonant frequency vibration.Because the effective propagation path of magnetic resonance is several meters, therefore, in realizing carrying out charging in the distance larger than the distance of electromagnetic induction, magnetic resonance has advantage.
The frequency of operation of magnetic resonance comprises the high frequency (such as, 6.78MHz etc.) in units of MHz, and so that the mode of concentration of energy in characteristic frequency is run.Thus it can once transmit considerable electric power.
Fig. 2 is the perspective view according to the wireless charger 200 in a kind of mobile terminal of one embodiment of the present invention.
With reference to figure 2, along with the size of the wireless charger 200 in mobile terminal 100 according to the present invention increases, this wireless charger 200 can automatically charge to multiple mobile terminal 100.Particularly, the wireless charger 200 of magnetic resonance type is more convenient with the wireless charger carrying out the electromagnetic induction type of charging than requiring mobile terminal 100 to be placed on exact position.
But, because the efficiency of magnetic resonance changes with distance, preferably arrange that the position of power transmission coil 220 and mobile terminal 100 is to raise the efficiency.In order to address this problem, the invention is characterized in and comprise driver element 230, it is configured to the placement location by utilizing magnetic resonance to detect mobile terminal 100, with transfer electrical power transmission coil 220, makes it closer to mobile terminal 100.
The structure that driver element 230 spirally reels is connected with the core of power main circle 220, then shifts the center of this power transmission coil 220 in the horizontal direction, thus improves the efficiency transmitting electric power to mobile terminal 100.In addition, driver element 230 can rotate in the horizontal direction and move.By rotary motion, the winding times of power transmission coil 220 can be adjusted.Meanwhile, hereafter should be described in detail this driver element 230 with reference to figure 3.
Sensing cell 240 comprises transducer, and it is configured to search for the position of the mobile terminal 100 of the top side being arranged on housing 210.Further, this sensing cell 240 can comprise at least one in proximity transducer 241, optical sensor 242, pressure sensor 243 and sensing coil 244.
Optical sensor 242 utilizing emitted light.If the light of this transmitting is reflected back toward this optical sensor 242, then this optical sensor 242 senses the Close approach of light with inspected object of this reflection.Whether the weight that pressure sensor 243 senses the top side of housing 210 is installed on the top side of housing 210 to detect mobile terminal 100.Further, sensing coil 244 can detect the position of mobile terminal 100 by the change of the electric power consumption sensing this sensing coil 244.
Fig. 3 is the diagram of the power transmission coil 220 according to wireless charger 200 inside in the mobile terminal of one embodiment of the present invention, illustrated therein is housing 210, power transmission coil 220 and driver element 230.
With reference to figure 3, this power transmission coil 220 is accommodated in housing 210.Further, mobile terminal 100 can be charged in the mode being installed in the top side of housing 210.In this case, the top side of this housing 210 can be formed by the material with sizable frictional force, to prevent mobile terminal 100 from landing this housing 210.
This power transmission coil 220 is loaded onto in housing 210.Particularly, by separating with himself, this power transmission coil 220 is wound the whole region through this housing.Because magnetic resonance uses high frequency, if the problem that coil just may be caused resistance to increase by intensive winding.Therefore, coil preferably reels 4 to 6 times.
In order to the spacing distance of hold-in winding, the inside of housing 210 may further include the spirality separator shown in Fig. 3.But this separator is not arranged on the mid portion of housing 210.Further, the driver element 230 be connected with the center of power transmission coil 220 is positioned at the mid portion of housing 210.
As shown in Figure 3, driver element 230 side left and to the right moves up, and can move up and down and/or on incline direction based on the size of housing 210.This driver element 230 is usually located at the center of housing 210, thus the center [Fig. 3 (a)] being centrally located at this housing 210 of power transmission coil 220.If sensing cell 240 detects that mobile terminal 100 is installed in the side part of housing 210, then control unit 250 controls this driver element 230 the center of power transmission coil 220 to be moved to the location point at mobile terminal place.
Due to coil at the mid portion of power transmission coil 220 than obtaining tightr at other winds portions, therefore the density of electromagnetic field increases.Therefore, if the mid portion of power transmission coil 220 is arranged to closely near mobile terminal 100, then efficiency electric power being sent to the charge coil of mobile terminal 100 can be enhanced.Thus, in order to improve the density in magnetic field, driver element 230 rotates to increase electric power the winding times [Fig. 3 (b)] of transmission coil 220.
Wireless charger 200 can also comprise wireless communication module 260, and it is configured to wirelessly communicate with the mobile terminal be arranged on housing 210.Because wireless communication module 260 communicates with mobile terminal 100 in short distance, short haul connection Wireless Telecom Equipment can be used, such as bluetooth, RFID (radio frequency identification) etc.
Wireless charger 200 can receive the information of the charged state (such as, charge level, charge efficiency etc.) about mobile terminal 100 by wireless communication module 260.Before driver element 230 is transferred to the position that mobile terminal installs, only utilize this information determine charge efficiency be equal to or less than reference value time, control unit 250 just controls driver element 230 and is transferred.If this charge efficiency is greater than reference value, then control unit 250 can not control driver element 230 and is transferred.
Power transmission coil 220 can also comprise switch or variable capacitor.Utilize this switch or variable capacitor can adjust the impedance of power transmission coil 220.
If adjusted position and the winding times of power transmission coil 220 by transfer driver element 230, then magnetic flux changes to change inductance.Because the magnitude of current that flows through this power transmission coil 220 changes based on the change of inductance, impedance must be adjusted, so that change the magnitude of current flowing through this power transmission coil 220.
Due to this switch or this variable capacitor can be utilized to adjust impedance, when transfer driver element 230, control unit 250 can utilize this switch or variable capacitor to adjust the value of impedance according to the change of inductance.
Fig. 4 is the diagram of the sensing cell 240 according to the wireless charger 200 in the mobile terminal 100 of one embodiment of the present invention.
With reference to figure 4, as described in aforementioned description, sensing cell 240 can comprise at least one in proximity transducer 241, optical sensor 242, pressure sensor 243 and sensing coil 244 etc.
Particularly, proximity transducer 241 utilizing emitted light (such as, infrared-ray etc.).If then the object collision near the light launched and proximity transducer 241 is reflected back toward this proximity transducer 241, then this proximity transducer 241 detects the object near it, then generates corresponding signal.
With reference to figure 4 (a), sensing cell 240 comprises multiple proximity transducer 241.If specific one in the plurality of proximity transducer 241 detects mobile terminal 100, then driver element 230 can shift to this specific proximity transducer 241.
Optical sensor 242 can detect the installation site of mobile terminal from the light that photoflash lamp or the display unit of mobile terminal 100 are launched by sensing.When mobile terminal 100 is installed on housing 210, if electric current flows through the Wireless charging coil resonated with power transmission coil 220, then photoflash lamp and/or the display unit that can control mobile terminal 100 glimmer.
If the charge efficiency of this Wireless charging coil becomes be equal to or less than reference value, then photoflash lamp and/or the display unit that can control mobile terminal 100 glimmer.
If the mode sensing the light launched from this photoflash lamp or display unit with optical sensor 242 detects the installation site of mobile terminal, then the mid portion that control unit 250 can control this spiral helicine power transmission coil 220 by transfer driver element 230 shifts to mobile terminal 100.
With reference to figure 4 (b), sensing cell 240 can comprise sensing coil 244.Multiple sensing coil 244 can be set up in the mode of the top side being distributed on housing 210.When electric current flows through sensing coil 244, if the Wireless charging coil of mobile terminal 100 is positioned near this sensing coil 244, then the power consumption of this sensing coil 244 increases.
Control unit 250 determines that mobile terminal 100 is placed on the sensing coil 244 of power consumption increase, is then shifted by the sensing coil 244 that driver element 230 increases to this power consumption.The electric current being applied to sensing coil 244 comprises the pulse-type current applied with predetermined period, and electric power can be alternately applied to multiple sensing coil 244.
So, the electric current being applied to sensing coil 244 has the frequency (such as, 100KHz etc.) lower than the electric current being applied to power transmission coil 220, thus avoids impacting the operation of power transmission coil 220.
Pressure sensor 243 is arranged on the top side of housing 210.If to apply pressure in the specified portions that mobile terminal 100 is installed in pressure sensor 243, then control unit 250 determines that this mobile terminal 100 is installed in part in compression, then driver element 230 can be transferred to the part sensing pressure.
Therefore, the invention provides following effect and/or feature.
First, according at least one execution mode of the present invention, charge efficiency can not be improved by the impact of the position of the mobile terminal be arranged on wireless charger.
Although invention has been described and illustrate with reference to the preferred embodiment of the present invention, it will be apparent to those skilled in the art that various modifications and changes may be made when without departing from the spirit and scope of the present invention herein.Therefore, the intent of the present invention is the modifications and variations of the present invention that are encompassed in the scope of claims and equivalent thereof.And, obviously be understandable that, execution mode configures by the claim in claims without specific reference relation being combined, or, after submit applications, execution mode can be included as new claim by revising.
Industry is applied
The present invention can be applied to various equipment and mobile terminal.
Claims (9)
1., for a wireless charger for mobile terminal, described wireless charger comprises:
Housing;
Power transmission coil, the mode that described power transmission coil spirally repeatedly reels is arranged in described housing;
Power module, described power module is configured to provide electric power externally to described power transmission coil;
Driver element, described driver element is connected with the spiral center of described power transmission coil;
Sensing cell, described sensing cell is configured to sense the position of the described mobile terminal of the top side being arranged on described housing; And
Control unit, described control unit controls the position that the spiral center of described power transmission coil is transferred to the described mobile terminal that described sensing cell senses by described driver element.
2. wireless charger according to claim 1, wherein, described driver element flatly moves at least one direction.
3. wireless charger according to claim 1, wherein, described driver element rotates with the winding times changing described power transmission coil.
4. wireless charger according to claim 1, described wireless charger also comprises short-range communication module, described short-range communication module is configured to wirelessly communicate with the described mobile terminal installed on the housing, wherein, described control unit receives the information about the charged state of described mobile terminal, and wherein, if the charge efficiency of described mobile terminal becomes be equal to or less than reference value, then described control unit controls described driver element and is transferred.
5. wireless charger according to claim 1, wherein, described power transmission coil also comprises at least one in switch and variable capacitor, wherein, described control unit passes through when shifting described driver element to control at least one in described switch and described variable capacitor, change according to the inductance value of described power transmission coil adjusts resistance value, so that described power transmission coil runs under driving frequency.
6. wireless charger according to claim 1, wherein, described sensing cell comprises multiple proximity transducer, described multiple proximity transducer is arranged on the top side of described housing, and wherein, described control unit controls that proximity transducer that described driver element is transferred to the Close approach sensing object.
7. wireless charger according to claim 1, wherein, described sensing cell comprises pressure sensor, and described pressure sensor is arranged on the top side of described housing, and wherein, described control unit controls the value changing section that described driver element is transferred to described pressure sensor.
8. wireless charger according to claim 1, wherein, described sensor unit comprises multiple sensing coil, described multiple sensing coil is arranged on the top side of described housing, wherein, described control unit controls the part that described driver element is transferred to that sensing coil place in multiple described sensing coil with different power consumption.
9. wireless charger according to claim 8, wherein, the frequency of operation of described sensing coil is less than the frequency of operation of described power transmission coil.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130155469A KR102097497B1 (en) | 2013-12-13 | 2013-12-13 | Mobile terminal wireless charger |
| KR10-2013-0155469 | 2013-12-13 | ||
| PCT/KR2014/002848 WO2015088108A1 (en) | 2013-12-13 | 2014-04-02 | Wireless charger for a mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104981965A true CN104981965A (en) | 2015-10-14 |
| CN104981965B CN104981965B (en) | 2018-06-12 |
Family
ID=53371392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480007390.3A Expired - Fee Related CN104981965B (en) | 2013-12-13 | 2014-04-02 | For the wireless charger of mobile terminal |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9819214B2 (en) |
| EP (1) | EP3087659B1 (en) |
| KR (1) | KR102097497B1 (en) |
| CN (1) | CN104981965B (en) |
| IN (1) | IN2015MN00959A (en) |
| WO (1) | WO2015088108A1 (en) |
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| CN107222033A (en) * | 2017-06-30 | 2017-09-29 | 努比亚技术有限公司 | A kind of wireless charging method and wireless charging electroplax |
| WO2018014284A1 (en) * | 2016-07-21 | 2018-01-25 | Intel Corporation | Wireless docking mat for electronic devices |
| CN110855016A (en) * | 2018-08-20 | 2020-02-28 | 苹果公司 | Wireless charging system for electronic device |
| WO2023226871A1 (en) * | 2022-05-25 | 2023-11-30 | 维沃移动通信有限公司 | Wireless charger and charging method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576781B (en) * | 2015-07-28 | 2019-06-11 | 宇龙计算机通信科技(深圳)有限公司 | A kind of charge control method, terminal, cradle and charging system |
| KR102125722B1 (en) * | 2016-11-29 | 2020-06-23 | 한국자동차연구원 | Coil structure for inductive and resonant wireless charging transmitter and integral control method for the same |
| CN109149794B (en) * | 2017-06-28 | 2020-11-17 | 金宝电子工业股份有限公司 | Wireless charging system and wireless charging method |
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| WO2023226871A1 (en) * | 2022-05-25 | 2023-11-30 | 维沃移动通信有限公司 | Wireless charger and charging method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015088108A1 (en) | 2015-06-18 |
| EP3087659A1 (en) | 2016-11-02 |
| KR20150069254A (en) | 2015-06-23 |
| EP3087659B1 (en) | 2019-09-04 |
| EP3087659A4 (en) | 2017-08-23 |
| US20160020633A1 (en) | 2016-01-21 |
| KR102097497B1 (en) | 2020-05-27 |
| CN104981965B (en) | 2018-06-12 |
| IN2015MN00959A (en) | 2015-08-07 |
| US9819214B2 (en) | 2017-11-14 |
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